Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2006-08-09
Eur.Phys.J.C49:511-522,2007
Physics
High Energy Physics
High Energy Physics - Experiment
22 pages, 7 eps figues, 2 tables
Scientific paper
10.1140/epjc/s10052-006-0134-1
The photoproduction of prompt photons, together with an accompanying jet, has been studied in ep collisions at a centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 77 pb-1. Cross sections were measured for the transverse energy of the photon and the jet larger than 5 and 6 GeV, respectively. The differential gamma+jet cross sections were reconstructed as functions of the transverse energy, pseudorapidity and x_gamma^obs, the fraction of the incoming photon momentum taken by the photon-jet system. Predictions based on leading-logarithm parton-shower Monte Carlo models and next-to-leading-order (NLO) QCD generally underestimate the cross sections for the transverse energies of prompt photons below 7 GeV, while the kT-factorisation QCD calculation agrees with the data better. When the minimum transverse energy of prompt photons is increased to 7 GeV, both NLO QCD and the kT-factorisation calculations are in good agreement with the data.
No associations
LandOfFree
Measurement of prompt photons with associated jets in photoproduction at HERA does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Measurement of prompt photons with associated jets in photoproduction at HERA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of prompt photons with associated jets in photoproduction at HERA will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-247713